| 2011-09-29 | BUREAU OF NATIONAL AFFAIRS INC | U | −27K sh | $39.50 | −$1.07M | 0 |
| 2011-09-29 | BUREAU OF NATIONAL AFFAIRS INC | U | −38.6K sh | $39.50 | −$1.53M | 0 |
| 2011-03-19 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+743 sh | $17.50 | ▲+$13K | 27,027 |
| 2010-09-30 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+512 sh | $16.50 | ▲+$8,448 | 37,263 |
| 2010-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+788 sh | $16.50 | ▲+$13K | 26,284 |
| 2010-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+622 sh | $16.50 | ▲+$10.3K | 37,263 |
| 2010-04-01 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+468 sh | $16.00 | ▲+$7,488 | 37,263 |
| 2010-03-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+644 sh | $16.00 | ▲+$10.3K | 37,263 |
| 2010-03-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+797 sh | $16.00 | ▲+$12.8K | 25,496 |
| 2009-10-01 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+461 sh | $15.75 | ▲+$7,260.75 | 35,017 |
| 2009-09-19 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+2,524 sh | $15.75 | ▲+$39.8K | 24,699 |
| 2009-09-19 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+656 sh | $15.75 | ▲+$10.3K | 35,017 |
| 2009-04-02 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+425 sh | $15.75 | ▲+$6,693.75 | 35,017 |
| 2009-03-21 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+619 sh | $15.75 | ▲+$9,749.25 | 22,175 |
| 2009-03-21 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+655 sh | $15.75 | ▲+$10.3K | 35,017 |
| 2007-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+364 sh | $15.00 | ▲+$5,460 | 30,730 |
| 2007-09-15 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+931 sh | $14.75 | ▲+$13.7K | 30,730 |
| 2007-09-15 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+650 sh | $15.00 | ▲+$9,750 | 20,308 |
| 2007-03-17 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+319 sh | $14.00 | ▲+$4,466 | 30,730 |
| 2006-12-23 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+1,814 sh | $13.75 | ▲+$24.9K | 29,116 |
| 2006-12-23 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+1,091 sh | $13.75 | ▲+$15K | 19,353 |
| 2006-03-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+296 sh | $13.00 | ▲+$3,848 | 29,116 |
| 2006-03-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+750 sh | $13.00 | ▲+$9,750 | 18,262 |
| 2004-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+631 sh | $12.00 | ▲+$7,572 | 25,257 |
| 2004-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+609 sh | $11.75 | ▲+$7,155.75 | 16,119 |
| 2004-09-18 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+879 sh | $11.75 | ▲+$10.3K | 25,257 |
| 2004-03-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+194 sh | $11.25 | ▲+$2,182.5 | 25,257 |
| 2003-12-31 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+649 sh | $11.25 | ▲+$7,301.25 | 23,553 |
| 2003-09-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+4,200 sh | $11.00 | ▲+$46.2K | 14,875 |
| 2003-09-20 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+801 sh | $11.00 | ▲+$8,811 | 23,553 |
| 2003-03-22 | BUREAU OF NATIONAL AFFAIRS INC | P | ▲+1,924 sh | $10.50 | ▲+$20.2K | 23,553 |